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Cash, cash equivalents and restricted cash (Tables)
12 Months Ended
Dec. 31, 2022
Cash, cash equivalents and restricted cash  
Summary of Cash, cash equivalents and restricted cash

    

2022

    

2021

Cash in banks

US$

77,224

US$

463,666

Cash on hand

425

266

Short-term investments

627,331

270,028

Restricted funds held in trust related to debt service reserves

6,873

7,162

Total cash, cash equivalents and restricted cash

US$

711,853

US$

741,122